Basic Strategy:
This feels a lot more forgiving than other recent ultimate stages as there are a few places where you can store back a little bit of CD e.g. stage 1, 4, 5.
The strategy for both boss forms is similar: get rid of the light runes somehow. The only thing to note is that the last stage has 98m HP.
1) Spin through and stall CD. You can stall 4-6 turns here depending on your team's HP and/or damage reduction
2) Spin through
3) Spin through the first form, burst the second
4) Spin through. Depending on your spinning ability, you might need a converter.
5) Bring something to make enchanted runes to fill in the puzzle shield
6a) Remove light runes and burst down
6b) Remove light runes and burst down